The caddisfly genus Triaenodes in the Neotropics (Trichoptera: Leptoceridae)

The genus Triaenodes as it occurs in the Neotropics is diagnosed and discussed in the context of the world fauna. Twenty new species are described and illustrated: T. acanthus ( Mexico), T. chirripo ( Costa Rica), T. clauseni ( Costa Rica, Nicaragua, Panama), T. cuyotenango ( Guatemala), T. flintorum ( Mexico), T. guadaloupe ( Panama), T. hodgesi ( Ecuador), T. hornitos ( Panama), T. kilambe ( Nicaragua), T. mexicanus ( Mexico), T. moncho ( Costa Rica), T. morai ( Costa Rica, Nicaragua), T. nicaraguensis ( Nicaragua), T. oaxacensis ( Mexico), T. tajo ( Costa Rica), T. talamanca ( Costa Rica), T. tapanti ( Costa Rica, Panama), T. tico ( Costa Rica, Panama), T. tuxtlensis ( Mexico), and T. woldai ( Panama). In addition, 4 previously described species are redescribed and figured: T. abruptus Flint 1991 ( Colombia), T. anomalus Flint 1967 ( Nicaragua, Mexico), T. delicatus Navas 1924 ( Costa Rica, Panama), and T. peruanus Flint & Reyes 1991 ( Colombia, Ecuador, Peru). The status of Triaenodes columbicus Ulmer 1909, is discussed. The larval and pupal stages of a Costa Rican species and the females of 9 species are described, representing the first descriptions of these life history stages for Neotropical Triaenodes. The genus Ylodes Milne is returned to synonymy with Triaenodes, as a subgenus. A key to the males of Neotropical Triaenodes is provided.